Locking device for milk-can covers



Aug. 19, 1930.

W. WINGARD El' AL LOCKING DEVICE FOR MILK GAN COVERS File-:jd Jan. 4I 1928 'Patented Aug. 19, i930 Dirt; einer -wrLLiAivi wiireiiiaD AND LEONARD Loeiiiiiev Diivien roaming-eencevnis; n t i Application mea' January 4, was,.f'seriaiNeige/insa.' f'

' 15 ming. i.

Our invention relates to covers of the kind used on milk and cream cans in the dairying industries, and the main object is to provide a simple, eificient and inexpensive locking def vice theuse of which eliminates the possibility of can covers coming off during transportation of thecans. Further objects andad- .vantages will appear in the following specification, reference beingv had to the accomanying drawing, in which,-

'Figyl isa top view of a preferred type of oury improved can cover.

f Fig. 2 is an approximately vertical diametrical sectional elevation about as on line r2 2 f Fig. 3 is a diametrical section about at right angles to sectionalelevation Fig. 2 and about as on line 3-3 in Fig. l, showing alsoin section the upper 'part of a milk can in whiehthe cover is shown in locked'position.

Fig. 4 is an enlarged sectional view of the center part ofour Yimproved can cover about as on line 4-4 in Fig. 2.. y

Fig. 5 isa modification of Fig. 2 and includingpartlyin section the upperportion ofV a milk or `cream jean of the usual type. y

i Referring to the drawing by reference nulrnerals 5--designates the upwardly tapering or shoulderpart of a milk can above which is l 'the usualvertical neck or collar part 5N and atop of the latter the integral upwardly flared inouth' 5F the upper perimeter of which is formed with a bead 5B'. j Our improved can cover is inv general appearanoe the same as the usual well known type having a cup like lower part (5G-of a size f to fit snugly within the neck 5N of the can-and formed concentric labove said part 6C the usual upwardly flared integral part i6F simule@ taneously fitting snugly within the part 5F'of the can as shown. 6T is aperiinetral top 'part .or rim kformed atits edge with a bead 6B normally concentric'of and outwardly ofthe bead 5B when the cover is on the can.

In Figs. l, 2, 3, and 4:, 7 designates the usual type of channel shaped cover handle arranged diametrically in the cover and with its ends suitably fixed as at 8 on the diametrically op posite inner faces of the funnel like part In our device the center part of the `web.ffsaidhandleniay bei-offset'upwardly asv i in Figs. 2 andB'and-Q is an auxiliary 'lowerweb o'rstrap parallel fto and below part 7Aand`li'xed`to` the under side'o'f the fl'foffja suitable bearing' 15B preferably ia-i3 are f xeditn shaft jie Se une theithrow onec ceiitricityv of onefis diametri'cally opposite'fthe'"otheigthus providing for` correspondi ing 4simultaneous Linward or out'wad, inovenientof the.: .bars lll-113, respectively in `or opi-.0f engagement@ii-@neri aufwesite apertures inl/the' flared 'p'artsfofffF 'Thesaijddiameal.Inoveinnt l isof Sefour'se:accomplished only by rotating culated to'jbe :suchA that said extremities are A drawn invif'ai'dly out ,ofenfgagement with the fapertufres 1'( inl the `eafrrbiit each always 'en- 'gaged withinV the aperture Vl'fof the cover.

When `the camsare swungV so that. the extreinf "ities offbals 14B project :through theapertures Vfof tlie canV itis obviousft-liat'tlie pover.

` lrelyglockedliii mening;

ydotted lifs"l9X,"Fig.2. In the modification, Fig. 5, the handle 7 is tubular andthe eccentric' operated 'means are entirely enclosed in the handle and operating of courselongitudinally therein instead eontaet jas indiof at right anglesvto the handle as in Figs. 179100( tures.

Vto 4 inclusive In this modiied construction handle 18 is on top of the handle and near its l free end provided with a depression 18D adapted to engage an upward projection 7l3 in the top part of the handle when the de-V vice is in locked position.

In the use of ourA device it is clear that the can cover is used in the same manner as all ordinary can covers, but before Vputting our cover in place on a can the lever 18 is swungy to a position contracting the bars ltand the cover is put in place so that said bars will subsequently be engaged slidably in the apertures 17 of the can when the handle 18 is turned to locking position, that is, when'the bars 14B lhave been projected outwardly to engage in said apertures. In the transportation or handling of cream and milk-cans there has hitherto been considerable loss when cans have accidentally been overturned or dropped and the covers come out, but this is eliminated in the use of our device.

IVe claim:

l. In a containervcover ofthe class described and having a flared circular opening and a lower integral closed cylindrical part adapted to close like parts of a container opening; a hand hold fixed diametrically in said cover and comprising a tubular member, arotatable vertical pin mounted'in said handle and projecting 'above' it, and means on said pin on its proj ectng part to rotate `said pin, a horizontally directed bearing in the cover at each end of'said handle and the container provided with registering apertures exteriorly thereof, expanding rod means in said bearing parts and means within` the handle on said pin for projecting said reciprocating rod means to simultaneously engage'or bedisengaged from said apertures of the container, said latter means comprisinga pair of ecceni tric cams fixed on said pin, an eccentric strap engaging each cam, abar'extenslon on each l strap and slidably engaged one iny each of said bearing parts, said eccentric cams fixed on the pin so as to cause said rods to be eX- panded into the apertures of the container simultaneously or retracted therefrom as 'described.

2. The structure specified in claim 1 in which said pin and cam rotating means comprising a lever iiXed on the said projecting part of the pin and operable in a horizontal plane and normally held frictionally on top of the said hand hold and longitudinallr thereof when the locking rods are expanded.

In testimonyv whereof we aivx our signa WILLIAM WINGARD. LEONARD vEJaHULsrrg 

